google has data centers all over the world. >> reporter: google says their data centers are well protected, in some cases relying on biometrics to screen employees. the company is working to encrypt the fiber lines. even if the system is secure, make no mistake, these internet giants have become the gate keepers of our digital lives. >> we put all of our digital eggs into their baskets. and whether that's wise is in terms of privacy and security is, i think, a very open question. >> reporter: today we are getting a little digitally vulnerable, there is only one foolproof way around it. write a letter and get a stamp. stephanie gosk, nbc news, new york. >>> still ahead for us tonight, a mystery involving a high school athlete, some very strange evidence, and parents demanding answers. >>> and later a political bombshell just emerging tonight. was president obama really considering running for re-election without joe biden? >>> we are back with a story finally getting more attention. the mysterious death of a high school football player in georgia and his parents who are convinced this was n